(19)

(11)

EP 1 175 767 A1

(12)

(43) Date of publication: 30.01.2002 Bulletin 2002/05 (21) Application number: 00930277.9 (22) Date of filing: 02.05.2000

(51) International Patent Classification (IPC)7: H04L 29/12, H04L 29/06, H04L 12/24 (86) International application number: PCT/US0011/803 (87) International publication number: WO 0067/450 (09.11.2000 Gazette 2000/45)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 03.05.1999 US 132147 P 13.05.1999 US 133939 P 31.03.2000 US 541451 (71) Applicant: Digital Envoy, Inc. Duluth, GA 30096 (US)	(72) Inventors: PAREKH, Sanjay, M. Duluth, GA 30096 (US) FRIEDMAN, Robert, B. Decatur, GA 30033 (US) TIBREWALA, Neal, K. Pittsburgh, PA 15232 (US) LUTCH, Benjamin Mountain View, CA 94040 (US) (74) Representative: Weston, Robert Dale et al PHILLIPS & LEIGH 5 Pemberton Row London EC4A 3BA London EC4A 3BA (GB)